Surface-treating machine



Dec. 2, 1930. T. E. D. BlLDE 1,733,773

. SURFACE TREATING MAcHINE Filed Aug. 21, 1929 im n Patented Dec. 2, 1930 A UNITED sTATEs-PATENT ori-'ical j 'man aan: DANIEL BILDE, or s'rocxnonu, swnmnr, Assmrron 'ro Invii-Nrn rammvnRwEnrUNGs-Gnsnntscnm, or scnurnnusmr, swnzmmn, A couronn- TioN or SWITZERLAND sonneri-runnin@ MACHINE Application ma August 21, ma, serial No. 887,872, nu in sweden Angustia, 192s.

My invention relates to machines for treating surfaces and more articularly relates to electricall operated oor treating devices, generally nown as 'loor polishers.

I I One object of my invention is to provide means attached to or in combination with or forming part of a surface 'treatingmachlne or supplying a surface treating fluid durmg operation. Still further objects are topro- 10, vide a surface treating'machine having automatic means for supplying surface treating fluid to the surface to be treated; to provide a convenienty arrangement of Hoor'polisher or the like comprising means readily oper- 145 able to sup ly fluid to the surface to be treated in varia le quantity at will; to provide an arrangement automatically supplylng surface treatin Huid to a device of the character described which supplies fluid during op- 20 erationbut which shuts o the supply of fluid during idleA periods; to provide means, in combination with the above described arrangements, for holding the Huid supply meansin closed position.

Accordin to the invention, wax for the waxing of oors is supplied to the ioor'adjacent the floor treating device due to erratic movements .of the Hoor treating device. I prefer to use a member which has a lag of 30 motion with respect to movement of the floor treating machine in general.

Further objects and the nature of the invention will become apparent from a consideration of the following description taken in 35 conjunction with the accompanying drawing showing several structures embodylng the invention, which drawingJl is a part of this specication and of whic Fig. 1 is a side view partly in section of an electrically driven floor polisher embodying the invention;

Fig. 2 is a view partly in section of a portion of the apparatus shown in Fi 1, the parts having a different relation; an

Fig. 3 is another form of structure applicable to the arrangement shown in Fig. 1 to embody the invention in different form.

Reference character 10 designates a floor surface on which rests the floor olisher indicated generally at 20. The oor polisher is shown asa brush disc.

-outlet oipening 22 and thereby close communi- Vjects downwardly within .container 18 and is of such length that bv screwing cover 19 comprises a casing. The casin includes an upper portion 11 enclosin an e ectric motor an a lower portion 12 ofg greater width enclosing rotatable Hoor treatin mechanism adapted to be rotated by the e ectric motor within casing portion 11. One or more rotary surface contact members may be used. The machine shown in Fig. 1 comprises a plurality of surface contact members 13 each comprising a disc carrier 14 and discs 15 replaceably carried by carriers 14. The disc 15 The discs are replaceable in order to. substitute other forms of discs such as polishing discs. A belt 16 passes around carriers 14 and is caused to move by the electric motor to rotate the carriers and the surface contact disc4 members. The surface contact members'are rotatably su ported from a frame member 17.

ounted on casing member 12 in front of casing portion 11 is a container 18 having a cover 19 which screws into the top of the container. The container has a tapered bottom 2l and a centrally disposed outlet opening 22.- Connected to the outlet opening 22 75 is a fluid supply pipe 23 which passes downwardly through casing 12 and through the central portion of contact member 13 and its support. Within container 18 and resting on the ottom part thereof over the outlet opening 22 is a ball 24. This ball, if free to move within container 19 tends to go to the-lowest point of the container and, due to the incline of the bottom of the container, tends to close cation etween pipe 23 and the interior of container 18. Ball 24 is preferably madev of metal such as steel or bronze.

Secured to cover 19 is a stem 26 which prointo the container, mem er 26 can be made to contact the top of ball 24 as shown in Fi 1. This secures ball 24 over the outletvlea ing fromthe container. A hole 27 is rovided in the side of the cover. This ole acts as a vent to permit air to enter the upper partof the container when the cover 1s unscrewed suiciently to give communication of air through hole 27. Container 18 con- 10 tains fluid wax or other door treating iluid.

Connected to the casing-of the floor treat-V ing machine is a handle 28 which is pivoted at 29.

In o ration of the surface treating machine escribed, container 18 is filled to the desired extent with' the floor treating iluid such as wax. If container 18 contains such fluid before starting the machine, cover 19 should be screwed down so that ball 24 is secured tightly over the lower outlet of container 18. Just before or just after-turning on the current for rotating the electric motor and setting the surface contact members in rotation, cover 19 is unscrewed so that vent 27 comes above the upper edge of the cylinder art of container 18 and so that ball 24 is ee to move. Ball 24, being free tomove, and havin an appreciable mass, lags behind the rest o the machine in o eration. That is, the inertia of ball 24 must overcome by erratic movement of the ioor polisher by hand. The inertia of ball 24 must be such that for a given movement of the floor treating machine, the ball will move within the liquid in container18, and that the discharge opening of the container is closed by the ball during normal operation of the iioor treating machine that is, neither the normal movementvof the machine over the floor nor the vibration of the driving motor may cause the ball to open the discharge pipe. It will be seen that the ball regulates the flow of floor Y treating fluid through pipe 23 and that this regulation of flow is caused at will by irregular movement of the ioor treating machine. By varying the rate of movement of the machine, the supply of fluid can be regulated. Thus the flow of fluid through pipe 23 can be regulated at will by the operator guiding the machine. If more floor treating iiuid is desired, the machine is given a faster acceleration of movement.

Fig. 2 shows ball 24 displaced to one side as by a quick movement of the iloor treating machine forwards by the operator. 'This completely uncovers the opening. As soon as the machine stops or its velocity of movement becomes constant, ball 24 moves back due to gravitation, to the central position shown'by the dotted line in Fig. 2.

The lower end of pipe 23 is cut slantwise in order to drip the Wax or fluid from4 the lowest point. In waxing floors, the ilow through pipe 23 is not great. The machine may be designed and operated to give a very slight How andto give great var1ations of rate of flow Vof the o'or treating fluid.

After the door has been waxed, the brush discs can be exchanged for polishing discs and cover 19 can be screwed down to seat ball 24 against the bottom of the container to completely prevent further flow of fluid. Thus, during the polishing' operation, no uid. will ilow through pipe 23. The arrangement is such that the container 18 and pipe 23 can be withdrawn from the ioor treatmg machine proper and put aside during the polishing operation. I

In the arrangement shown in Fig. 3 a valve attached to a ball or weight 31 and held by a spring 32 takes the place of the ball 24. A-valve seat member 33 is provided in pipe 23 or the lower part of container 18 against which Ythe valve 30 seats. The spring 32 is held by a pin 35 set in slots 36 in the lower end of pipe 23. The dotted lines in Fig. 3 show how Vthe Weight 31 is moved due to the lag and inertia. This accomplishes the same result as the arrangement shown in Fig. 1. The arrangement shown in Fig. 3 can replace the corresponding arrangement shown in Fig. 1. With the arrangement shown in Fig. 3, when the speed of movement of the {ioor treating machine is constant or during an idle period, valve 30 seats and prevents iiow of fluid through ipe 23.

While I have descri d but two forms of apparatus for carrying out the invention, it will be understood that the invention may be carried out in numerous other ways. While I have shown my improved liquid supply member applied to a ioor olisher of the type disclosed in application erial No. 286,663 filed June 19th, 192s, it will be understood that it may be applied to other types of surface treating machines.

Having thus described my invention, what I claim is:

1. A machine for treating ioors comprising a casing, one or more rotary surface contact members within said casing, means to rotate said members and means mounted on said casing for feeding iiuid to the iooi comprising a container having a iluid outlet and means closing said outlet during idle periods vcomprising a member having an ap preciable mass sufiicent to prevent opening of said outlet due to vibration and normal movement of the machine while being mov- Vable to uncover said outlet on abnormal movement of the machine such as to provide an inertia greater than that provided by vibration or normal movement of the machine.

2. A machine for treating lioors comprising a casing, one or more rotary surface conta'ct members within said casing, means to rotate said members and means mounted on said casing for feeding fluid to the floor comprising a container having a fluid outlet and a member closing said outlet due to gravitation during 'idle periods and having an appreciable mass suicient to' prevent opening of said outlet due to lvibration and normal movement of the machine while being movable to uncover said outlet on abnormal movement of the 'machine such as to provide an inertia greater than that provided by vibration or normal movement of the machine. A

leo

3. A machine for treating ioors comprising a casing, one or more rotary surface contact members within said casing, means to rotate said members and means mounted on said casing for feeding fluid to the floor comprising a container having a uid outlet and a member having an appreciable mass sufficient to prevent opening of said outlet due to vibration and normal movement4 of the machine while being movable to uncover said outlet on abnormal movement of the machine such as to provide an inertia greater than that provided by vibration or normal movement of the machine and means for securing said member in closed position.

4. machine for treating oors comprising a casing, one or more rotary surface contact members Within said caslng, means to rotate said members and means mounted on said casing for feeding iuid to the lioor comprising a container having a iuid outlet and a ball arranged in sai container having freedom of movement and having an appreciable mass sufcient to prevent opening of said outlet due to vibration and normal movement of the machine while being movable to uncover said outlet on abnormalv movement of the machine such as to provide an intertia greater than that provided by vibration or normal movement of the machine.

5. A machine for treating ioors comprising a casing, one or more rotary surface contact members Within said casing, means to rotate said members and means mounted on said casing for feeding fluid to the oor comprising a container having a cover and an outlet and a member within said container having an appreciable mass suilicient to prevent opening of said out-let due to vibration and normal movement of the machine While being movable to uncover said outlet on abnormal movement of the machine such as to provide an inertia greater than that provided by vibration or normal movement of the machine and means attached to said cover for securing said member in closed position.

6. A machine for treating surfaces comprising one or more surface contact members having movement under manual guidance, means to supply iuid to the surface and means having an appreciable mass sufficient to prevent supplying of fluid to the surface due to vibration and normal movement of the machine and to lag behind the major portion of the machine to vary the supply iuid to the surface on abnormal movement of the machine such as to provide an inertia greater than that provided by vibration or normal movement of the machine.

7. A machine for treating floors comprising surface contact members, means to rotate said members and means to supply liuid to the surface to be treated comprising a container having a fluid outlet and means having an appreciable mass suicient to prevent supplying of fluid to the surface due to vibration and normal movement of the machine and to lag with respect to the major portion of the'machine to supply iuid on abnormal movement of the machine such as to provide an inertia greater than that provided by vibration or normal movement of the machine.

8. A machine for treating floors comprising a casing,- one or more rotary surface contact members Within said casing, means to rotate said members and means mounted on said casing for feeding iiuid to the lioor comprising a container having a iuid outlet and an air inlet and a member'having an appreciable mass sufficient to prevent opening of said outlet due to vibration and normal movement of the machine while being movable to uncover said outlet on abnormal movement of the machine such as to provide an inertia greater than that produced by vibration and normal movement of the machine and means for securing said member in closed position and for maintaining said air inlet closed. Y

9. A machine for treating floors comprising a casing, one or more rotary surface contact members Within said casing, means to rotate said members and means mounted on said casing for feeding fluid to the ioor comprising a container having a cover and an air inlet and an outlet, a member Within said container having an appreciable mass sulicicnt to prevent opening of said outlet due to vibration and normal movement of the machine while being movable to uncover said outlet on abnormal movement of the machine such as to provide an inertia greater than that provided by vibration and normal movement of the machine, said cover being movable to close said air inlet and means attached to said cover for securing said member in closed position when said cover is in position closing said air inlet.

10. A machine for treating floors comprising a casing, one or more rotary surface contact members within said casing, means to rotate said members and means mounted on said casing for feeding fluid to the ioor comprising a container having a fluid outlet and means closing said outlet during idle periods comprising a mass and affording an appreciable resistance to opening of the outlet suiiicient to prevent opening of said outlet due to vibration and normal movement of the machine While being movable to uncover said outlet on abnormal movement of the machine such as to provide an inertia of the mass greater than that provided by vibration or normal movement of the machine.

11. A machine for treating floors comprising a casing, one or more rotary surface contact members within said casing, means to rotate said members and means mounted on said casing fer feeding uuid to the floor comprising a container havin a fluid outlet and means closing said outlet uring idle periods comprising a mass and a spring and affording an appreciable resistance to opening of the outlet suflicient to prevent opening of said outlet due to vibration and normal movement of the machine while being movable to uncover said outlet on abnormal movement of the machine such as to provide an inertia of the mass greater than that provided by vibration or normal movement of the machine.

In testimony whereof I hereunto alix my Signat-ure.

TORD ERIK DANIEL BILDE. 

